<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{this.$store.state.city}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list">
            <div class="button-wrapper" v-for="item of hotCities" :key="item.id"
                  @click="handleCityClick(item.name)">
              <div class="button">{{item.name}}</div>
            </div>
          </div>
        </div>
        <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
          <div class="title border-topbottom">{{key}}</div>
          <div class="item-list">
            <div class="item border-bottom"
                 v-for="innerItem of item"
                 :key="innerItem.id"
                 @click="handleCityClick(innerItem.name)">
              {{innerItem.name}}
            </div>
          </div>
        </div>
      </div>
    </div>
</template>

<script>
import BScroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    cities: Object,
    hotCities: Array,
    letter: String
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  methods: {
    handleCityClick (city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
    }
  },
  watch: {
    letter () {
      const element = this.$refs[this.letter][0]
      this.scroll.scrollToElement(element)
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/variables.styl'
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #CCC
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
  .title
    line-height: .54rem
    background: #eee
    padding-left: .2rem
    color: #666
    font-size: .26rem
  .button-list
    overflow: hidden
    padding: .1rem .6rem .1rem .1rem
  .button-wrapper
    float: left
    width: 33.33%
    .button
      margin: .1rem
      padding: .1rem 0
      text-align: center
      border: .02rem solid #ccc
      border-radius: .06rem
  .item-list
    .item
      line-height: .76rem
      padding-left: .2rem
</style>
